improved name for NHC_NAT_CHK_EXTERNAL_IP_ADDRESS

Former-commit-id: 2c67e5d4

roles/nhc/README.md

@@ -12,7 +12,9 @@ nhc_emails: nobody@nowhere.nowhere
 nhc_email_subject: "Node Health Check" 
 
 In addition the NAT check needs two variables to be defined to be enabled  (See example)
+- ADD_NHC_NAT_CHECK has to be defined to (any) value
+- NHC_NAT_CHK_EXTERNAL_IP_ADDRESS is the address to be pinged
 
 Example:
   roles:
-  - { role: nhc, EXTERNAL_IP_ADDRESS: "118.138.246.208", ADD_NHC_NAT_CHECK: 1  }
+  - { role: nhc, NHC_NAT_CHK_EXTERNAL_IP_ADDRESS: "118.138.246.208", ADD_NHC_NAT_CHECK: 1  }

roles/nhc/templates/check_nat.nhc.j2

@@ -7,7 +7,7 @@ function check_nat() {
 
 
 #test NAT by pinging an external IP ADDRESS
-PING_EXTERNAL="ping -c 2 {{ EXTERNAL_IP_ADDRESS }}"
+PING_EXTERNAL="ping -c 2 {{ NHC_NAT_CHK_EXTERNAL_IP_ADDRESS }}"
  
 $PING_EXTERNAL
 RESULT=$?